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08-02-2022, 09:03 PM
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#1 |
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"something witty here"
Join Date: Apr 2009
Location: Salmo, B.C, Canada
Posts: 966
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TBI wire harness removal help
The PO had left the tbi harness in when they had changed to the 454, now Im mid change to a cummins and would like to get rid of it and clean up the harness in the engine a little. What is safe to get rid of and what do I need to keep?
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57 chevy 4x4 70 swb fleetside 4x4 68 burb 2wd: 71 burb 2wd: 350 4spd 71 lwb fleetside 4x4: 350/sm465/205/3.07 eaton posi rear 72 lwb fleetside Cheyenne 454/th400 1991 GMC V3500 CC 4x4 |
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08-03-2022, 06:49 AM
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#2 |
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Registered User
Join Date: Sep 2002
Location: Liberty, Mississippi
Posts: 672
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Re: TBI wire harness removal help
The tbi harness is stand alone. Reach behind the glove box and unhook the harness from the computer. Push the big plug out of the firewall that is right under the relays, and work the two computer connectors thru to the engine side. There should be a hot feed or two and you may have to work the temp and oil sensor wires for the gauges out the harness.
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08-03-2022, 07:05 AM
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#3 |
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Registered User
Join Date: Jul 2014
Location: North-central Virginia
Posts: 1,104
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Re: TBI wire harness removal help
The TBI harness also has a small connector somewhere behind the radio that gets unplugged. This connector goes to the obd1 port and the check engine light.
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1987 C6P V20 truck, 2010 LMG 5.3, AFM delete, 2010 Camaro exhaust manifolds, 1997 nv4500, 1991 np241c, hydroboost, 2005 14bff axle & driveshaft, drop-n-lock gooseneck, 4.10 gears, stock suspension, rims, and tires. Still a work in progress. Any questions or suggestions are welcome! |
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